<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/logo.png" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出登录</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse?'64px':'200px'">
        <!-- 侧边栏菜单区域 -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409eff"
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu
            :index="item.id + ''"
            v-for="item in menulist"
            :key="item.id"
          >
            <!-- 一级菜单的模板区 -->
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{ item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/home/'+subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavState('/home/'+subItem.path)"
            >
              <i class="el-icon-menu"></i>
              <span>{{ subItem.authName }}</span>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 页面主体内容 -->
      <el-main>
        <span class="flexible" @click="flexible">
          <i class="el-icon-s-fold" v-if="isShow"></i>
          <i class="el-icon-s-unfold" v-else></i>
        </span>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data () {
    return {
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-users',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isShow: true,
      isCollapse: false,
      activePath: ''
    }
  },
  async created () {
    const { data: res } = await this.$http.get('menus')
    console.log(res)
    if (res.meta.status !== 200) {
      return res.meta.msg
    }
    this.menulist = res.data
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout () {
      // 清空会话存储
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    flexible () {
      this.isShow = !this.isShow
      this.isCollapse = !this.isCollapse
    },
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style scoped lang="scss">
.home-container {
  height: 100%;
  .el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 10px;
    align-items: center;
    font-size: 20px;
    color: #ccc;
    img {
      width: 50px;
      height: 50px;
    }
    div {
      display: flex;
      align-items: center;
    }
    span {
      margin-left: 15px;
      user-select: none;
    }
  }
  .el-aside {
    background-color: #333744;
    .el-menu {
      border-right: none;
      .iconfont {
        margin-right: 10px;
      }
    }
  }
  .el-main {
    background-color: #eaedf1;
    .flexible {
      position: absolute;
      // top: -15px;
      // left: -15px;
      top: 60px;
      cursor: pointer;
    }
  }
}
</style>
